Past 24 Hours Pollutant Concentration Summary
Causeway Bay
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2024-04-27 23:00 | 47.9 | 9.3 | 4.9 | 613.3 | 32.6 | 16.2 |
| 2024-04-27 22:00 | 51.5 | 8.5 | 5.3 | 635.3 | 35.9 | 19.8 |
| 2024-04-27 21:00 | 42.4 | 13.0 | 4.3 | 798.7 | 43.9 | 26.5 |
| 2024-04-27 20:00 | 41.6 | 13.9 | 5.6 | 600.4 | 43.6 | 26.1 |
| 2024-04-27 19:00 | 55.0 | 9.3 | 6.1 | 646.0 | 38.0 | 22.1 |
| 2024-04-27 18:00 | 54.3 | 10.3 | 5.5 | 630.3 | 36.6 | 20.1 |
| 2024-04-27 17:00 | 55.9 | 9.7 | 5.5 | 560.7 | 38.8 | 21.9 |
| 2024-04-27 16:00 | 58.9 | 9.9 | 5.4 | 599.0 | 36.0 | 19.7 |
| 2024-04-27 15:00 | 40.3 | 18.1 | 4.2 | 515.0 | 38.0 | 22.1 |
| 2024-04-27 14:00 | 55.0 | 16.3 | 5.3 | 507.0 | 38.3 | 22.3 |
| 2024-04-27 13:00 | 54.8 | 16.0 | 5.1 | 489.5 | 35.2 | 20.5 |
| 2024-04-27 12:00 | 46.2 | 15.6 | 4.6 | 509.8 | 36.5 | 21.8 |
| 2024-04-27 11:00 | 53.4 | 10.7 | 5.4 | 621.2 | 34.1 | 19.2 |
| 2024-04-27 10:00 | 48.2 | 10.9 | 4.6 | 520.8 | 36.8 | 21.5 |
| 2024-04-27 09:00 | 51.4 | 10.1 | 4.8 | 545.4 | 30.3 | 18.6 |
| 2024-04-27 08:00 | 39.7 | 16.3 | 3.9 | 523.1 | 31.5 | 17.4 |
| 2024-04-27 07:00 | 32.2 | 20.0 | 3.1 | 421.4 | 32.1 | 17.2 |
| 2024-04-27 06:00 | 32.8 | 17.3 | 3.0 | 672.6 | 20.7 | 11.2 |
| 2024-04-27 05:00 | 20.4 | 28.0 | 2.7 | 475.8 | 18.0 | 8.7 |
| 2024-04-27 04:00 | 16.7 | 31.0 | 2.6 | 469.5 | 25.1 | 11.4 |
| 2024-04-27 03:00 | 23.1 | 24.2 | 2.9 | 727.5 | 22.1 | 11.4 |
| 2024-04-27 02:00 | 29.5 | 13.5 | 3.6 | 613.2 | 21.2 | 10.2 |
| 2024-04-27 01:00 | 35.8 | 15.2 | 3.7 | 656.0 | 31.1 | 16.4 |
| 2024-04-27 00:00 | 31.6 | 17.6 | 3.4 | 604.2 | 26.8 | 16.1 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) Concentration shown is in microgram per cubic metre (µg/m3).
(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.